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College Algebra & Trigonometry, 2018a

College Algebra & Trigonometry, 2018a

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416 CHAPTER 9. GRAPHING THE TRIGONOMETRIC FUNCTIONS<br />

9<br />

8<br />

−1<br />

7<br />

6<br />

5<br />

3π<br />

4<br />

3π<br />

2<br />

9π<br />

4<br />

3π<br />

−2<br />

−3<br />

−4<br />

π<br />

2<br />

π<br />

3π<br />

2<br />

2π<br />

17.<br />

4<br />

18.<br />

−5<br />

12<br />

1<br />

11<br />

0<br />

10<br />

9<br />

π 2π 3π 4π<br />

−1<br />

−2<br />

2π<br />

3<br />

4π<br />

3<br />

2π<br />

8π<br />

3<br />

19.<br />

8<br />

20.<br />

−3

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